from 01.01.1974 until now
Yaroslavl, Yaroslavl, Russian Federation
Volgograd, Volgograd, Russian Federation
Yaroslavl, Yaroslavl, Russian Federation
Yaroslavl, Yaroslavl, Russian Federation
Volzhskiy, Volgograd, Russian Federation
UDK 544.3 Химическая термодинамика
Butadiene Nitrile Rubber (BNR) is a special purpose elastomer with an increased resistance to aliphatic hydrocarbon solvents, oils, and fuels. Depending on the monomer ratio of the butadiene-nitrile copolymers, their compatibility with different types of solvents and plasticisers varies considerably. In additional, BNRs with carboxyl, hydroxyl and hydrogenated BNRs are industrially available. The purpose of the study was to calculate the solubility parameters of different compositions of BNRs copolymers, hydrogenated BNRs, and rubbers with hydroxyl and carboxyl groups. We calculated the increments of the functional groups of copolymers under study and the molecular attraction by the Small constants. The calculations based on the processing of reference data on the enthalpies of evaporation and molar volume of aliphatic and aromatic hydrocarbons, nitriles, acids, alcohols, and esters. Also we used the increments obtained to calculate three dimensional solubility parameters of the copolymers as well as the dependencies of the change in Gibbs free energy at mixing on the solvent volume fraction for the two types of solvents.
butadiene nitrile rubbers, solubility parameters, group additivity method
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